Joseph conley



UNITED STATES PATENT OFFICE.

JOSEPH OONLEY, OF ST. JOSEPH, MISSOURI, ASSIGNOR OF ONE-HALF TO HUGH J. BOWEN, OF SAME PLACE.

CIRCULAR BRICK-KILN.

SPECIFICATION forming part of Letters Patent No. 491,038, dated January 31, 1893.

Application led October 6, 1892.

To all whom zit may concern:

Be it known that I, JOSEPH CONLEY, a citizen ot the United States of America, residing at St. Joseph, in the county of Buchanan and State of Missouri, have invented certain new and useful Improvements in Circular Brick- Kilns; and I do herebydeclare the following to be a full, clear, and exact description of the invention,such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters of reference marked thereon, which form a part of this specification.

. This invention relates to improvements in circular brick or tile burning kilns.

The object of the invention is to provide a continuously burning circular kiln of improved construction in which the fuel is fed from the top upon the green` bricks or objects to be burned, the combustion of the fuel being regulated by underground dues having suitable dampers, so that the sections of the kiln may be used progressively; the dues having openings and dampers which are cheap and simple in construction, as will be hereinafter fully set forth and particularly pointed out in the claims.

In the accompanying drawings forming part of this specification: Figure lis a section view taken below the ground level of the kiln, and Fig. 2 is a vertical section taken on the line 2-2 of Fig. 1.

A designates a central chimney, having openings at its base which lead into dues da, said flues being below the ground level.

B designates a circular wall which surrounds the chimneyand has at intervals doorways B which extend to the door A of the kiln, the ues c a passing through this circular wall.

O designates the outer wall of the kiln, and this wall is provided with openings c c located above the level of the floor and on a line with the lues a a, said openings being adapted to be covered by swinging or sliding doors c so that when desired a direct draft from those openings to the chimney may be had. The i'lues co have dampers d', which are simply slides working in suitable grooves, and when lowered Awill form cut-os.

Serial No. 448,034. (No model.)

D'D designate walls extending between the circular wall B and the exterior wall O, said walls being arched over at the ground level as shown to form tlues c which extend from the circular wall B outwardly and short ues f which are located between the flues c and 0L.-

The walls D which con neet the walls D form a circular flue g between said walls and the exterior wall C.` The flues a. e fand g are formed by the walls as shown, and the arched portions of said walls above the lues are provided with apertures d2, c,f and g', the apertures g being located on a line with the fines entering the flue g, and intermediately if desired. y

The outer circular wall C is provided eXteriorly with a serios of recesses h and openings through which can be passed straight plates or cut-offs t', said cut-offs being manipulated by suitable handles on the outside of the kiln, and it will be noted that these cutolfs are located in the fluegbetween the flues which open into the same. The openings c which lead into the circular line g extend downwardly from their outer to their inner p ends where they meet the flues ct, and by this construction moisture or dampness is kept out of the flues, as it locates the openings above the ground level, the ground level being designatedV by the line m in Fig. 2.

K designates a partition wall, which is built up Within the kiln between the circular walls B and O, and the tires are started in the kiln to one side of this wall and continued therefrom around the kiln.

It will be noted from the construction here-l in shown and described that the employment of long damper rods to the dampers or cutoffs are dispensed with, and that the cnt-offs i can be operated on the outside of the kiln while the rods connected to the inner cut-offs can be operated in the compartment surrounding the chimney. A

The outer wall of the kiln is provided with doorways as shown in Fig. 2, so that a wayl` IOO titions which are located adjacent to the doorways and which can be removed as the burning of the bricks advances.

In operation, after the bricks have been stacked within the kiln the fuel is fed into apertures formed between the bricks and eX- tends from the base of the kiln to the top thereof, the fuel being preferably slack coal fed from pots mounted on top of the kiln; the fire is then started to one side of the partition K, and there being a down draft through the bricks said down draft and the products of combustion pass into the iiues. e orf and toward one of the iiues a., and by properly adjusting the cut-offs t' and dampers ct the heat and products of combustion can be caused to circulate entirely around the kiln. By this construction and. arrangement the heat which is. usually Wasted in starting the fire is utilized, and in practice it has been demonstrated that the heat is also increased by the arrangement of the draft, resulting in an increase in thevalue of the product; alsothe heat from the red-hot Waresy or bricks is radiated in the cooling and is utilized to burn oth er brick. The radiated heat contacts with the damp or u-'nbu-rnt Ware or brick `advance of the re, and generates: therefrom a vaporor gas, which is usually called Watergas, and is consumed in the course of burning the brick or Ware. This is especiallydesira-ble in certain classes of Wares, as it gives to them an appearance which is often sought after.

In a kiln constructed as herein set forth the fires after being once started can be kept upl continuously, and by properly arrangin-g the damper-s one section can be entirely cu-t off from the tire and the heat and productsof combustion are led toV the chimney so that a section of the kiln can beV filled. It will also be noted that inthis form of kiln no permanent furnace is used, and in starting the-kiln a temporary furnace is built of green brick, said brick being burned and taken out with the other products of the kiln, thus saving considerable cost in the construction.

Having thus described my invention, what Iclaim as new, and desire to secure by Letters- Patent is:

l. In a circular kiln an outer wall, an inner wall and a central chimney, a circular ilue adjacent to the outer wall and ues connecting the circular flue with the chimney, and

intermediate flues e and f, said lues having apertures in the upper portion thereof which lead to the interior of the kiln, the circular ,Hue being provided with cut-offs t' arranged to 'separate each ue from the adjacent one, substantially as shown, and for the purpose set forth.

2. In a circular kiln, the combi-'nation with the inner and outer circular walls i'ntersected v below the ground level by iiues fr, openings c in the cutter wall located above the ground level and connected withy the Iiues a, dampers a adaptedto cut olf the lines a from the chimney, intermediate; -ues e'andj?, each flue having openings connecting the same with the interior ofthe kiln, a series of cut-offs adapted to intersect the iiue gand cut off the fines` from the interior ofthe kiln, and a par-- tition. wall, substantially as set forth.,

3. In a circular kiln for burningy brick, the

y combination of the inner and outer circular 

